MSB

LSB

FUNCTION

D7

D6

D5

D4

D3

D2

D1

D0

1

Soft Mute On

0

1

1

1

1

Direct Mute

0

1

Zero Crossing Mute On

00

Zero Crossing Mute Off (delayed until next zero

crossing)

1

Zero Crossing Mute and Pause Detector Reset

0

0

0

160mV ZC Window Threshold (WIN = 00)

0

1

0

80mV ZC Window Threshold (WIN = 01)

1

0

0

40mV ZC Window Threshold (WIN = 10)

1

1

0

20mV ZC Window Threshold (WIN = 11)

0

Nonsymmetrical Bass Cut (note 4)

1

Symmetrical Bass Cut

An additional direct mute function is included in the Speaker Attenuators.

Note 4: Bass cut for very low frequencies; should not be used at +16 and +18dB bass boost (DC gain)

Mute

MSB

LSB

SPEAKER ATTENUATOR LF, LR, RF, RR

D7

D6

D5

D4

D3

D2

D1

D0

1.25dB step

XXX

0

0

0

0dB

X

X

X

0

0

1

-1.25dB

X

X

X

0

1

0

-2.5dB

X

X

X

0

1

1

-3.75dB

XXX

1

0

0

-5dB

X

X

X

1

0

1

-6.25dB

X

X

X

1

1

0

-7.5dB

X

X

X

1

1

1

-8.75dB

10dB step

XXX

0

0

0dB

X

X

X

0

1

-10dB

X

X

X

1

0

-20dB

X

X

X

1

1

-30dB

X

X

X

1

1

1

1

Speaker Mute

For example an attenuationof 25dB on a selected output is given by: X X X1 0 1 0 0

Speaker Attenuators

TDA7342

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